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Reference.org
Parton (particle physics)
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<p>In <a href="/facts/Particle_physics/YgIuyj2t">particle physics</a>, the parton model is a model of <a href="/facts/Hadron/C0sd1zty">hadrons</a>, such as <a href="/facts/Proton/clCjepXP">protons</a> and <a href="/facts/Neutron/oRCM1geb">neutrons</a>, proposed by <a href="/facts/Richard_Feynman/32vGFrtB">Richard Feynman</a>. It is useful for interpreting the cascades of radiation (a parton shower) produced from <a href="/facts/Quantum_chromodynamics/3cA2ctyb">quantum chromodynamics</a> (QCD) processes and interactions in high-energy particle collisions. </p>